DemoAppTesseractCleanResult.java

 public static String cleanResult(String result){
        StringBuilder sb = new StringBuilder();
        for(int i =0;i<result.length();i++){
            if( Character.isAlphabetic( result.charAt(i)) || Character.isDigit( result.charAt(i))) {
                sb.append( result.charAt(i));
            }
        }
        return sb.toString();
    }